Maybe she feels that going on the cruise would be like moving forward without her husband? However, she needs to come to terms with the fact that it is exactly what she will eventually have to do. I hope she is not just using the kids as a reason for why she doesn't want to go.
I said no offense ment. However, you folks are a bit behind on covid protocols. And I think most people here know how much I love our northern neighbors.
That is unfortunate. Sometimes a diversion, like a cruise, could be good to to get their minds temporarily off of the loss. However, she knows her family best.